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Subjects
- Conservation of natural resources -- Michigan.1
- Ecology -- Study and teaching.1
- Environmental impact statements.1
- Environmental protection -- Michigan.1
- Fire fighters -- Michigan.1
- Forest fires -- Michigan.1
- Forestry.1
- Laboratories.1
- Limnology -- Great Lakes.1
- Lumber industry.1
- Nuclear power plants -- Environmental aspects -- Michigan.1
- Rangers -- Michigan.1
- Research facilities.1
- Research institutes.1
- Research vessels.1
- Research.1
- Water.1